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Mela B3 is La Roche-Posay's dark spot corrector serum, built around Melasyl and niacinamide to even out tone and soften the look of discoloration. It is a lightweight day serum in a 1.0 fl oz bottle, meant to be used morning and evening with daily sunscreen. At $44.97 at Walmart as of November 7, 2026, it sits at the low end of its recent range, with only two stores pricing it new.
In stockSold by LovelySkinReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
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Lowest price we've seen: $60.99 on Nov 7 at La Roche Posay. Tracked across 1 store since Nov 7.
With 4.2 out of 5 from 2,503 ratings, most buyers report a more even tone and fading of post-blemish marks after several weeks. Complaints center on slow results and irritation on sensitive skin.
La Roche-Posay Mela B3 is a dark spot corrector face serum with Melasyl and niacinamide, in a 1.0 fl oz size. This niacinamide serum is formulated to respect the skin's natural tone while delivering powerful, visibly lasting results, making it a targeted option for uneven tone and discoloration. Apply a few drops to cleansed skin morning and evening, follow with moisturizer, and use sunscreen daily, which is essential when treating the look of dark spots. As a dark-spot-focused serum from a dermatologist-recommended brand, this Mela B3 corrector combines Melasyl and niacinamide in a single anti-aging step for shoppers who want to fade the appearance of discoloration and even out skin tone as part of a consistent routine.
